← Learning Center4 min read

What Is ATR (Average True Range) and How It Measures Real Volatility

The technical indicator that measures actual volatility, not direction — why it doesn't say whether a stock will rise or fall, and why that's exactly what makes it useful.

The definition

ATR (Average True Range) measures the average range of a stock's price movement over a period (typically 14 days) — in other words, how much the price moves on a typical trading day, regardless of direction. A high ATR means the stock moves a lot each day (high volatility); a low ATR means relatively modest daily movement.

Why ATR says nothing about direction

This is the key difference between ATR and indicators like RSI or MACD: ATR doesn't try to forecast whether the price will rise or fall, only how much it might move. A stock can have a high ATR while in a steady uptrend, or equally while crashing — the metric itself is indifferent to direction.

The practical use: risk management

Because it's a pure volatility measure, ATR is used mainly for setting position size and stop-loss levels that fit a specific stock's character — a stock with a high ATR needs a wider stop-loss to avoid getting 'stopped out' by ordinary daily noise, while a stock with a low ATR can use a tighter one.

How StockIQ uses this

ATR is part of roughly 23 indicators in the Technical Analysis category (25% of the score) — contributing a picture of the stock's overall volatility level, alongside directional indicators like RSI and MACD.

Want to see this in action on a real stock? Analyze a stock now